import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'
import Cate from '../components/goods/Cate.vue'

Vue.use(VueRouter)

const routes = [
    { path: '/', redirect: '/login' },
    { path: '/login', component: Login},
    { path: '/home', component: Home,redirect: '/welcome',children:[
      { path: '/welcome', component: Welcome},
      { path: '/users', component: Users },
      { path: '/rights', component: Rights },
      { path: '/roles', component: Roles },
      { path: '/goods', component: Cate }
    ]}
    
]

const router = new VueRouter({
  routes
})
// 路由导航守卫
router.beforeEach((to,from,next)=>{
  // to表示将要访问的界面
  // from表示从哪个路径跳转来
  // next是一个函数表示放行  next()直接放行 next(/login)强制跳转登录界面
  if(to.path=='/login')  return next();
  var tokenStr=window.sessionStorage.getItem('token');
  if(!tokenStr)  return next('/login');
  next();
})
export default router
